1. in a careful and persistent way; with steady, earnest effort

Examples

• She studied diligently for her final exams.
• The detective worked diligently to solve the case.
• He diligently practiced piano every day for two hours.
• The students diligently took notes during the lecture.
• The gardener diligently tended to each plant in the greenhouse.
• She diligently saved money for her college tuition.